|Monthly Tech-Tip |
Description: SASKATCHEWAN BENTONITE TYPICAL
This material was manufactured for some years from large deposits near Avonlea, Saskatchewan and used mainly in the oil industry, but also in ceramics as a plasticizer. It is typical of the bentonite deposits in the area.
Bulk Density: 60 lbs/cu. ft.
325 mesh - 60%
200 mesh - 75%
100 mesh - 95%
Bentonite can make a clay body instantly plastic, only 2-3% can have a big effect. It also suspends slurries so they don't settle out and slows down drying.
Clays that are not kaolins, ball clays or bentonites. For example, stoneware clays are mixtures of all of the above plus quartz, feldspar, mica and other minerals. There are also many clays that have high plasticity like bentonite but are much different mineralogically.
|By Tony Hansen|
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